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#### Concept explainers

**(a)**

**Interpretation:**

The mass (kg) of 50 liters of gasoline should be calculated.

**Concept introduction:**

The density is the ratio of mass and volume given as:

Here, m is mass and V is volume

The specific gravity of a body with respect to water is calculated by taking ratio of density of that body to the density of water. It is also related to molar mass as follows:

**(b)**

**Interpretation:**

The volumetric flowrate in liters/s should be calculated.

**Concept introduction:**

The density is the ratio of mass and volume given as:

Here, m is mass and V is volume

**(c)**

**Interpretation:**

The average mass flow rate delivered by a gasoline pump should be estimated.

**Concept introduction:**

The density is the ratio of mass and volume given as:

Here, m is mass and V is volume

**(d)**

**Interpretation:**

Gasoline and Kerosene are blended to obtain a mixture with a specific gravity of 0.78. The volumetric ratio of the two compounds in the mixture should be estimated.

**Concept introduction:**

Volumetric ratio of gasoline and kerosene can be calculated as follows:

Volumes can be calculated from densities which are related to each other in terms of specific gravity as follows:

The specific gravity of a body with respect to water is calculated by taking ratio of density of that body to the density of water. It is also related to molar mass as follows:

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# Chapter 3 Solutions

Elementary Principles of Chemical Processes, Binder Ready Version

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